My thanks to Rusty for the info on the 300 Apex. Now,does anyone have anything on the
338 Scovill?? I know I need 35 WHELEN brass
but I could use some help on bullet weight and
powder charges.Thanks

The Barnes #4 manuel has the 338 scovill in it for 185, 210,225 and 250 grain TSX bullets.

As TJay says the Barnes has the 338 Scovill. Do a internet search you will find some more. So what is the difference between the 338 Scovill and the 338 Hawk? Same as the 375Hawk and 375Scovill? 06 vs 9.3x62 brass?

I used 280 brass and made the 280PDK and 340PDK . Both end up with more capcity that the Gibbs versions.

Use 338-06 data and realize that you have 5-8% more case capacity and use good handloading judgement from there.